Pile fabrics



2 Sheets-Sheet 1.

J. O. DUGKWORTH.

LOOM FOR WEAVING PILE EQ'ABRIGS.

Patented Nov. 28, 1 882 UNITED STATES PATENT OFFICE.

JOHN C. DUGKWORTH, OF NEW YORK, N. Y., ASSIGNOR TO E. S. HIGGINS &OO.,OF SAME PLACE.

LOOM FOR WEAVING PlLE-FAB RlCS.

SPECIFICATION forming part of Letters Patent No. 268,202, dated November28, 1882,

Application filed January 27, 1880.

To all whom zi may concern Be it known that I, JOHN G. DUoKwoR'rH, ofthe city, county, and State of New York, have invented certain new anduseful Improvements in Looms for Weaving Pile Fabrics, of which thefollowing is a full, clear, and exact description, reference being badto the accompanying drawings, forming part of this specification. Thisinvention relates to what is known as the wire-motion in looms forweaving pile fabrics.

. One part of the invention is more particularly applicable to that kindof wire-motion 1 whichis thesnbject of English patentof George and JohnCollier, dated April 2, 1862, and which has been quite extensively usedin this country. This part of the invention consists in an improvementin the mechanism for giv- 2o ing the necessary motion to the carriage orcarriages carrying the wire-inserting and wirewithdrawing devices,whereby theloom is rendered more compact, and the wire slide or carriageis caused to have a long dwell after the insertion of the wires in thewarp, and a longer time is obtained for the beating up of the lay.

The invention further consists in improvements in the devices whichsupport the heads 0 of the pile-wires after the wires have been insertedinto the shed, and in the means of supporting the inner or movable endof the yield ing or movable wire slide-bar, whereby injury to theshuttle'and wire-motion in case of the 5 stoppage of the shuttleopposite to said sup-- ports is prevented.

The accompanying drawings illustrate the application of the severalimprovements to a loom for weaving Brussels carpets; but only 0 thoseparts necessary to illustrate the invention are represented.

Figure 1 is a front elevation of the loom. Fig. 2 is a right-hand sideelevation of the same. Fig. 3 is a vertical section of the same,

5 taken in a direction parallel with the warp, in the line 00 a: inFig. 1. Fig. 4 is a front view, showing parts of the mechanism foroperating the wire-motion which are hidden from view in the frontelevation, Fig. 1. Fig. 5 is a plan of the principal parts of thewire-motion. Fig.

6 is a side view of a portion of the wire-motion, which will behereinafter explained. Fig. 7 is a front view of a rotary shaft, crank,and rockshat't lever, and their connections for working the wire-motion.Fig.8 exhibits an end view of the lay and corresponding side view of thepicker-stick, and ot'the above-mentioned shaft, crank, and rock-shaftand connections.

A A indicate the main framing of the loom, consisting of two side framesof ordinary construction, connected by the breast-beam A and cross-beamsin the usual way, and having provided within or on them bearings for thecrankshaft O, which works the lay D, and for the cam-shaft M.

F is the guide-rail of the wire-motion, consisting of a straight andrigid horizontal bar, of dovetail or other suitable transverse section,secured firmly to the framing of the loom, and having fitted to slidealong it the slide or carriage F, which carries the wire-withdrawinghook f,the said slide or carriage being connected by a rod, 7L2, withand receiving its motion from the arm H of a horizontal rock-shaft, 71.,which is arranged in bearings in an outer frame, A, secured to theright-hand side frame of the loom, and occupies a position at rightangles to the lay'crank'shai't (J and parallel with the side frames, AA.

Gr is the flexible bar, on which works the So slide or carriage G whichcarries the wire-inserting nippers g. This bar, which is bolted to therail F, is curved and made with a bow at one end, as shown in the planview, Fig. 5, to give it the necessary elasticity in a back- 8 5 wardand forward direction. The slide or carriage G is connected to slide orcarriage F by a rod, f, so that the latter slide or carriage imparts tothe former one its motion along the bar Gr. go

The parts of the wire-motion thus far described are substantially ofwell-known construction, and therefore need no further description.

The rock-shaft h, with its arm H, before de- 5 scribed, and its arm H",(best shown in Figs. 1 and 8,) constitute a lever, which occupiessubstantially the position of the lever heretofore used to operate thewire-insertin g and wirewithdrawingdevices, only its fulcrum is placed ilower down and farther from themain frame of the loom; and the saidlever derives its motion from a crank, I, on a rotary shaft, I, (seeFigs.1 and 2,) which is arranged atright angles to the lay crank-shaft Oand parallel with and outside offthe right-hand side frame, A, inbearings in the outer frame, A. This shaft derives motion from the maincran k-shaft O, at the rate of one revolution of shaft I to two of shaft0, through bevel-gears G 1 the said crank I being connected by anadjustable shackle-rod, h, with the arm 11 of the rock-shattlever.Thiscrank-shaftlis substantiallylike that heretofore used, and is drivenin the same way; but

instead of being, as has been usual, arranged outside of thefulcrumorrock-shaft h of thelever h H Ti -that is to say, farther from the mainframe of the loom than the said fulcrum, or else almost directly oversaid fulcrum-it is arranged at a considerable distance inside of it, ornearer to the said frame, in bearingsin the outer frame, A; and insteadofits front end, to which the crankI is attached, being extended forwardto or nearly to the front of the loom, that end is so far in rear of thecenter of oscillation of the lay that the arm H of the rock-shaft leveris enabled to be set so far back on its rock-shaft it that thepicker-sticks D may work in front of it. By thus keeping back the frontend of the shaft I and the arm H the said shaft is enabled to be broughtvery near the main or side frame, A, of the loom, where it can'be bettersupported and occupies a good position; and the necessity of extendingthe lay crankshaft 0 far beyond thema-in framing to enable the shaft Ito be geared with it is obviated. The arrangement of the crank-shaft Ibetween the side frame, A, and the fulcrum of the rockshaft lever h H Hor inside the fulcrum of said rock-shaft. lever, produces a motion ofthe wire slide or carriage difierent from that which it would have ifthe crank-shaft were arranged on the outer side of the fulcrum of saidrockshaft lever, or at a greater distance from the side frame. Thismotion is illustrated by Fig. 7, where the position of the partsrepresented in full outline is that when the wire is withdrawn, and theposition shown in dotted outline is that when the insertion iscompleted. The crank I will of course give to the arm H a comparativedwell at the end of each movement; but this dwell will be longer whenthe wire is fully inserted than when it is completely withdrawn, becausewhen the crank reaches the position shown in dotted outline the point ofconnection between the rod h and the arm H is very nearly on the centerof the shaft I, and during the movement of the crank from the dottedposition to that indicated by the line I the wire remains stationary, ornearly so, while when the arm H is at the position shown in full linesand the wire is withdrawn the point of connection between the rod IL andthe arm 11 is at its greatest distance from the shaft I, and the armwill be given but a short dwell. The wire is inserted while the crank 1moves from the position shown in full outline to that shown in dottedoutline. The wire-carriages then remain stationary, or nearly so, whilethe.

slowly,or while the crank is making a full halfrevolution, which isadvantageous, not only if the pile is to be out, but because it alwaysrequires more power to withdraw the wire than to insert it. Thisdesirable movement of the wire slides or carriages could not be attainedif the shaft I were placed on the outer side of the fulcrum of the rockshaft lever h H H because the action would be reversed-that is, thepoint of connection between the rod h and arm H would be near to thecenter of the shaft while the wire was withdrawn, thus producing a longdwell, while the shorter dwell would take place when the wire wasinserted, and when it would be objectionable.

It will be obvious that the above-described improvement for operatingthe slides or sliding carriages F G would be equally applicable to asingle slide or carriage carrying both the wire-inserting andwire-withdrawing devices, as the operation of the two carriagesdescribed is transmitted from carriage F to carriage G by a simpleconnection between them which causes them to move together.

L (see Figs. 1, 2, 3, and 5) is the forked lever by which the points ofthe withdrawn pilewires are carried back preparatory to being insertedinto the shed. The said lever, having its fulcrum at Z, Fig. 2, isoperated by a cam, L, Fig. 4, on the cam-shaft M acting on a lever, Lwhich works on a fulcrum-pin, l, and is connected with the lever L bymeans of a rod, P. The cam acts to throw back the lever L for carryingback the wires, and the said lever is retracted by a spring, 1.

P (best shown in Figs. 2, 3, and 5) is the sup porting-bar, whichsupports the heads of the pile-wires after the said wires have been inserted into the shed. This bar is pivoted loosely at its front end by apivot, 19, to the breast-beam, or to a small stand, 19, secured to thebreast-beam of the loom, and it extends backward over the lay and beyondthe rearmost position of the back thereof through a vertically-slottedor forked bracket, 10 which is secured behind the lay to the sideframing, A, having in its normal condition its rear end supported on thebottom of the slot or fork in said bracket, and being prevented by thesides of the said slot or fork from moving laterally, while it is freeto move upward when necessary. The said bar is curved at about themiddle of its length, and its rear portion is so much elevated, as shownin Figs. 2 and 3, that the shuttles may pass under it without touchingit in their'ordinary movement along the raceway. In case of a shuttlestopping opposite to the said bar, and by the forward movement of thelay being caused to come in contact with the under side of the said bar,the

IIO

shuttle willlift the said bar, thereby avoiding the injury to theshuttle or wire-motion, whichhas been liable to occurin such case whenthe bar has been of the usual construction and rigidly attached tobreast'beam in the usual way. Q (best shown in-Figsfi, 5, and 6)is thebar for supporting the inner and movable end of the flexible or movablebar G, on which worksthe slide G, which carries the inserting-nippers.This bar is arranged over thebar 1, Its rear end is turned upward, asshown at q,

toserve as a backstop to the bar G, and its front end'is pivoted to thestand 1) by a pin,

q, and is held up to a proper position to support the said bar G, asshown in Fig. 6, by means of a fixed supporting pin or projection, q,secured in or provided on the standard 11.

This pivoting of the bar Q allows it to be lift-- ed up as far asnecessary by the wire-headsupporting bar P and the superincumbent wireheads whenever the latter bar is raised by the shuttle, as hereinbeforedescribed.

The take-up mechanism and the devices for operating the camber-board ofthe Jacquard- Serial No. 12,895, filed July 2, 1880.

What I claim as my invention i's 1. The combination, with the mainframing and the carriage or carriages provided with the wire-insertin gand wire-withdrawing mechanism, of a lever placed outside the mainframin g, working transversely thereto, and connected with said carriageor carriages, a rotary shaft occu pyin ga position parallel with andoutside of said main framing, nearer thereto than the fulcrum of saidlever, a crank upon said rotary shaft, meansforimpartin g rotary motionto said shatt, and a rod connecting said lever with said crank, thewhole arranged substantially as herein represented and described.

crank 71, means for operating said shaft, the 1'ock-shaft h, having anarm, H, connected with saidcarriage or carriages, and an arm, 11*,connected with said crank, the said arm H and the crank and theirconnections being arranged in rear of the center of motion of the layand in rear of the picker-sticks, all substantially as and for thepurpose herein set forth. i

3. The combination, with the layand breastbeam, of a.pile-wire-headsupporting bar, P, having a pivoted connectionwith thebreastbeam, and extended rearward over the lay beyond the rearwardposition of the latter, and elevated to permit the shuttle to pass underit, substantially as and for the purpose herein described.

4. The combination, with the lay and breastheain and apile-wire-head-supporting bar, having a pivoted connection with thebreastbeam and extending backward beyond the lay, of a fixed verticallyslotted or forked supporting-bracket arranged behind the lay andreceiving the rear part of said bar, substautially as herein described.

5. The combination, with the breast-beam, the pile-wire-head-supportingbar, having a pivoted connection therewith, and the flexible vice, of asupporting-bar which supports themovable end of the said wire slide-bar,and which has a pivoted connection with the breastbeam, substantially asherein described.

- FREDK. Harries,

T. J. KEANE.

